Ok, that means you're running Chrome's built in version of Flash Player. To see if this version is to blame, you need to disable this version using the steps I listed in post #4. Once done, you should see the version 11.3.300.271. Once you get that, try again.

Other than opening a new issue over on the Chromium bug database, the only other thing I can recommend at this time is going back to a previous version of Flash Player (such as the latest 10.3) release, then disabling the PPAPI plugin in Chrome. Please note though that when Chrome updates, it's possible that they will reset Flash to again use the PPAPI version.